The perimeter of a floor of a room is 30 m and its height is 3 m. Find – InterviewSolution

InterviewSolution

1.

The perimeter of a floor of a room is 30 m and its height is 3 m. Find the area of four walls of the room.

Answer»

Given details are,

Height of floor = 3m

Perimeter of floor = 30m

So, perimeter = 30

2(l+b) = 30

l+b = 30/2

l+b = 15m

∴ Area of four walls of room = 2 (lh + bh) m²

= 2h (l+b)

= 2 (3) (15)

= 90m²

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